What is the CVSS score of CVE-2023-52026?

CVE-2023-52026 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.6%.

Which versions of Ex1800T Firmware are affected by CVE-2023-52026?

Organizations using TOTOlink EX1800T V9.1.0cu.2112_B20220316 face critical risk from CVE-2023-52026, a OS command injection vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2023-52026?

Yes, a public proof-of-concept exploit is available for CVE-2023-52026. Prioritise patching immediately. EPSS: 3.6%.

How to fix or mitigate CVE-2023-52026?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Validate that input sanitization is in place for all user-controlled parameters.

Ex1800T Firmware CVE-2023-52026

CRITICAL

OS Command Injection (CWE-78)

2024-01-12 cve@mitre.org

Command Injection Ex1800T Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:34 vuln.today

PoC Detected

Jun 11, 2025 - 17:15 vuln.today

Public exploit code

CVE Published

Jan 12, 2024 - 13:15 nvd

CRITICAL 9.8

DescriptionCVE.org

TOTOlink EX1800T V9.1.0cu.2112_B20220316 was discovered to contain a remote command execution (RCE) vulnerability via the telnet_enabled parameter of the setTelnetCfg interface

AnalysisAI

TOTOlink EX1800T V9.1.0cu.2112_B20220316 was discovered to contain a remote command execution (RCE) vulnerability via the telnet_enabled parameter of the setTelnetCfg interface. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. TOTOlink EX1800T V9.1.0cu.2112_B20220316 was discovered to contain a remote command execution (RCE) vulnerability via the telnet_enabled parameter of the setTelnetCfg interface Affected products include: Totolink Ex1800T Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.